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Californians out of electricity cant get gasoline to generators!
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MyHeadHz:

--- Quote from: KaneTW on October 13, 2019, 12:49:12 pm ---Am I misremembering things or did the CO2 emission composition in studies change

A while back I was sure that passenger vehicles were a tiny contributor to greenhouse emissions, but current statistics show around 60% of all transport related emissions (so about 10% of all emissions) to be from light duty passenger transport.

Is my brain playing tricks or was it always this way?

--- End quote ---

There are two factors at play, the science/math, and the marketing.   Both things that you quoted sound similar to numbers I've heard, but they are not contradictory.  The key is limiting the subject to transportation-related emissions, or to human-related co2 emissions, or similar areas of focus.  Either way you cut it, humans are responsible for a small portion of green house emissions and other parameters.  However, everything we do is in excess of the green house gases in our original balanced system.  Instead of taking many thousands of years to have a cycle, that small tip to the balance can make the cycle only in the hundreds of years, and cause other unforeseen consequences like mass extinction due to the increased rate of change and magnitude.  Evolution vs Chaos Theory
nctnico:

--- Quote from: NiHaoMike on October 13, 2019, 12:49:55 pm ---
--- Quote from: tom66 on October 13, 2019, 10:09:15 am ---You want to blame someone, blame everyone that drives a petrol car spewing emissions into the atmosphere, warming it and increasing the frequency of dry seasons which can trigger wildfires.

--- End quote ---
They should have required all new cars to get at least 30 MPG highway like a decade ago, if not earlier.

--- End quote ---
That would be a good solution but even then cars are not a significant source of CO2 to start with. In the NL it is about 13% for the entire transport sector.

But more on-topic: controlling wild fires is a pure maintenance problem. Over here we have quite a bit of forrest too but these are divided in sections with slow burning trees at the borders of each section. If power lines cause sparks then these should be fixed but this will come at higher prices for electricity. Unfortunately the US typically seems to be more inclined to clean up the mess afterwards rather than prevent a problem.
don.r:

--- Quote from: KaneTW on October 13, 2019, 12:49:12 pm ---Am I misremembering things or did the CO2 emission composition in studies change

A while back I was sure that passenger vehicles were a tiny contributor to greenhouse emissions, but current statistics show around 60% of all transport related emissions (so about 10% of all emissions) to be from light duty passenger transport.

Is my brain playing tricks or was it always this way?

--- End quote ---
I was always under the impressions that the top 10 or 20 biggest ships accounted for more emissions than all vehicles worldwide because they burned high sulfur oil out at sea.
maginnovision:

--- Quote from: nctnico on October 13, 2019, 02:26:49 pm ---
--- Quote from: NiHaoMike on October 13, 2019, 12:49:55 pm ---
--- Quote from: tom66 on October 13, 2019, 10:09:15 am ---You want to blame someone, blame everyone that drives a petrol car spewing emissions into the atmosphere, warming it and increasing the frequency of dry seasons which can trigger wildfires.

--- End quote ---
They should have required all new cars to get at least 30 MPG highway like a decade ago, if not earlier.

--- End quote ---
That would be a good solution but even then cars are not a significant source of CO2 to start with. In the NL it is about 13% for the entire transport sector.

But more on-topic: controlling wild fires is a pure maintenance problem. Over here we have quite a bit of forrest too but these are divided in sections with slow burning trees at the borders of each section. If power lines cause sparks then these should be fixed but this will come at higher prices for electricity. Unfortunately the US typically seems to be more inclined to clean up the mess afterwards rather than prevent a problem.

--- End quote ---

You can't have a forest in the desert, and the US is BIG. There is no way you could control all of it.

Just California is as big as: Cameroon, France, Iraq, Morocco, Papua New Guinea, Paraguay, Spain, Sweden, Thailand, Turkmenistan, Uzbekistan, Yemen
nctnico:
But most of these countries don't have the financial resources that California has and yet they don't have huge raging wild fires (or need to shut down electricity because the wires cause sparks).
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